Tension device



I June 24, 1930. G. w. JACQUES TENS ION DEVICE" Original Filed Nov. 24, 1924 Patented June 2 4, 1930 enonen w. JACQUES, or NE we MASSACHUSETTS, ASSIGNOR TO ATLAS TACK oonronn'rron, or FAIRHAVEN, MASEflLCHUSETTS, A CORPORATION ornnw YORK minister: DEVICE Original application filed November 24, 1924, Serial No. 751,934. Divided and this application filed February 1, 1928.

This invention relates to devices for applying tension to strip material, being more particularly intended to apply tension to bias tape as it is fed to work: to reinforce the work along the line: of fastening" elements set therein, as is disclosed for example in my application for patent Serial No. 751,934, filed November 24, 1924, for tape applying fastener setting inachlne, now Patent No. 1,700,165 granted January 29, 1929, of which the present application is a division. In the machine disclosed in that application the tape is weakened intervals by laterally extending slits terminating inwardly of the edges of the tape to leave uncut margins.

The device of the present application is intended to apply tension to the tape along these uncut margins so that the tape may be conformed automatically in flat condition by distortion in its plane to the curvature of a line of fasteners as set in the Work.

For a more complete understanding of this invention, reference may be had to the accompanying drawings in which Figure 1 is a fragmentary front elevation of the fastener setting machine showing the tension device in position thereon.

Figure 2 is a detail front elevation of the device in a different position relative to the fastener setting mechanism.

Figure 3 is an elevation at right angles to that of Figures 1 and 2.

Figure 4 is a section on line 44 of Figure 3.

Referring first to these figures, l indicates a punch and set mechanism carrier reciprocable in the line of feed of the work and carrying a bar 2 vertically slidable therein which supports at its lower end a combined punch and set 3. This mechanism may be of any suitable form, but herein shown is a portion of the well known Peerless hook setting machine. At 4 is indicated the work plate of the machine on which the work is supported, the punch and set 3 being designed to punch work supported thereon, the punch and set mechanism then feeding laterally where the hook Serial No. 251,089.

tape edges, and then through the tension mechanism at 6.

After passing through this tape guiding and weakening mechanism, thetape passes to a tension mechanism before it reaches the hook setting mechanism. As shown this tension mechanism is fixed to the hook setting mechanism to partake of its feed and reciprocative movements and comprises a bar having-a portion at its upper end of reduced rectangular cross-section to fit within a slot in a ring 47, this ring fitting and being clamped to the carrier 1 by any suitable means such as by a set screw 48. In order to retain this bar 45 in position a leaf spring 49 is shown as provided with a hooked upper end 50 engaging over the top of the ring 47 and an inwardly bent rib 51 which may engage beneath the edge of this ring, or in a notch 52, this leaf spring 49 being fixed to the lower portion of the member 45 by means of a screw 53. The lower position is the normal operative position of the device, but it maybe raised out of the Way so as to clear fasteners previously set, when the machine is used to set individual fasteners in a series where they may have been missed in normal operation or to effect repairs where fasteners may be lacking. The lower end of the member 45 is cut away on opposite sides, as at 56, and has a trans verse slot 57 therein, this slot communicating with a central circular perforation 58 in which may be seated a coil spring 59 bearing at its upper end against the base of the perforation 58 and at its lower end against the central reduced portion 60 of a spool shaped tension member 61. This central portion 60 is adapted to ride in the slot 57 and the circular end portions 62 ride in the cut away portions 56. The spring 59 urges this spool shaped member downwardly as far as permitted by a stirrup shaped strap 63 which extends u on opposite sides of the member 50 and is hxed thereto as by means of a screw 64. The lower portion of this member 63 forms a flat support for the tape 10 which passes thereover, and between it and the tension member 61. This tension member is clearly shown in Figure 3 and bears only against the marginal portions of the tape which are left uncut by the knife in the guide 5, as more fully disclosed in the parent application hereinbefore referred to, the tension member being out of contact with the tape except at its flanges.

In order to facilitate the threading of the tape .over the member 63 and beneath the spool shaped tension member, means is provided for raising this member against the tension of the spring 59. As shown this comprises a finger lever 65 pivoted at 66 to the rear face of the member 45 and having depending therefrom at one side its pivot an L shaped rod 67 the lower inturned member 68 of which passes beneath the central portion of the member 61. By raising the outer end of the finger lever 65 the rod 67 is raised and its lower end engaging the tension roller causes this roller to be raised also.

After the setting of each stud, as the punch and setting mechanism reciprocates preparatory to forming a succeeding hole through the tape and the work, the tape is held to the work by the hooks previously set and passes through the tension device as this moves with the punch and setting mechanism toward the tape guiding and weakening mechanism at 5, this exerting a tension on the tape in the direction of work feed, causing the tape to automatically conform to the direction of the pull from each stud to a succeeding stud so that it is thus conformed to the contour line of the series of studs as set in the work by distortion in its plane even though this line be curved. v

Having thus described an embodiment of this invention it should be evident to those skilled in the art that various changes and modifications might be made therein without departing from its spirit or scope as defined by the appended claims.

I claim:

1. A tape tension device comprising a member having a fiat support against which the tape passes, a spool shaped member having end flanges spaced to bear on the marginal portions of the tape and elsewhere out of contact therewith, and a spring for urging said member in a direction to press the tape against said support.

2. A tape tension device comprising a member having a support against which the tape passes, a spool shaped member having end flanges spaced to bear on the marginal portions of the tape, a spring for urging said member in a direction to press the tape in for engaging the edge portions only of a passing therethrough and elsewhere out of contact therewith to impart resistance to the passage of the tape.

4. A tape tension device comprising a bar, means for fixing said bar to a fastener settin mechanism, a tape guide member carried by said bar, and means in said guide member for engaging the edge portions only of a tape passing therethrough to impart resistance to the passage of the tape, and means for moving said engaging means out of engagement with said tape.

In testlmony whereof I have affixed my signature.

GEORGE V. JACQUES. 

